Battle of the Atlantic (WWII)

Saturday, January 20, 2018

The battle of the Atlantic was the naval military engagement that took place from 1939 to 1945, in the Atlantic Ocean during World War II. It was fought between the German Kriegsmarine's submarines and the Allied navies warships.

The main objective of the German navy was to destroy the maritime supply lines to Great Britain, attacking cargo and freight ships of all types. Thus, Germany hoped not only to deprive the British of war materiel and ammunition, being shipped from the United States, but also of food supply. Since the Third Reich did not have a strong force of battleships and aircraft carriers, it had to rely on its submarine fleet to carry out this mission. The battle of the Atlantic would last until the end of the World War II and would be a very decisive theater of conflict. 

During this long submarine campaign the German U-boats sank thousands of tons of Anglo-American shipping. But besides the submarine threat, the German Navy also fought with smaller warships, which were known as Pocket Battleships. On December 13, 1939, the German battleship Graf Spee marauded in the South Atlantic when British warships from the Royal Navy's South American Division took on the might of the Graf Spee, which was seriously damaged in the Battle of the River Plate and had to be scuttled at the end by its crews.

During the first three years, the German had the upperhands in the Battle of the Atlantic, attacking the enemy ships in small groups of submarines called packs, causing great damage to the British supply lines. However, with the introduction of modern and powerful sonars, as well as more powerful depth charge, the British could turn the tide of war to their favor. Although, the Allied nations won the battle of the Atlantic, about 3,600 merchant ships and 180 warships of all kinds had been sunk by the lethal German submarines.

Fragata Clase F 125

Wednesday, January 17, 2018

La clase F125 Baden-Württemberg es una serie de 4 fragatas misilística de la armada alemana. Construidas por las empresas Thyssen-Krupp y Lürssen, la primera de ellas fue botada en 2016, entrando en servicio en la marina de guerra a mediados de 2017. Es un navío de última generación con un diseño que emplea la forma y tecnología para el sigilo.


Armamento

La clase F 125 Baden-Württemberg de fragatas están armadas con 8 misiles superficie-superficie (anti-buques) RGM-84 Harpoon; 42 misiles anti-aéreo RAM Block II; 1 cañón naval de 127mm, que dispara munición guiada Vulcano; 2 cañones automáticos, operados por control remoto, de 27mm; 7 ametralladoras de calibre 12,7mm.

Planta propulsora

4 generadores diesel de 2,9 MW cada uno; 2 motores eléctricos de 4,7 MW; 1 turbina de gas de 20 MW; 2 conjunto de hélices y ejes, y 1 impulsor de proa de 1 MW.

Características técnicas

Eslora (longitud): 149,52 m
Manga: 18,8 m
Calado: 5 m
Desplazamiento: 7.200 toneladas
Tripulación: 110 hombres

Imperio de Alejandro Magno (desmembramiento)

Friday, January 12, 2018

Las conquistas de Alejandro Magno no sólo fueron una grandiosa epopeya militar, sino la obra de un verdadero genio político que extendió por el mundo la cultura y el pensamiento griego. A pesar de su muerte temprana, el impulso iniciado perduraría a través de los años.

Extensión territorial del imperio y administración

El vasto imperio abarcaba tres continentes: Grecia, Macedonia y Tracia (en Europa); Egipto (en Africa); Siria, Caldea, Irán, Asia Menor e India (en Asia). Para mantener la unidad territorial, Alejandro empleó una prudente tolerancia para no alterar el estilo de vida de los países conquistados. Aspiró a crear la unidad del mundo antiguo bajo la influencia civilizadora de Grecia. Sin embargo, Alejandro respetó las religiones de los pueblos vencidos, confiando la administración civil local a los funcionarios nativos. Pero vigiló a los gobernadores y reprimió severamente sus abusos.

División y desmembramiento

A la muerte de Alejandro, la unidad del imperio no tardó en romperse, pues no había dejado sucesor, planteando el grave problema de la sucesión legítima. Los únicos que podían sucederlo eran su hermano Arrideo, pero era retardado, y el hijo de su viuda, pero éste era un niño aún. Esto llevó a una lucha interna entre sus generales para adueñarse del poder.

Los generales terminaron dividiendo el territorio en cuatro administraciones o juridicciones: el general Antigono, que era el más poderoso, quedó al frente del Asia, que era la mayor extensión; Antipater, de Grecia y Macedonia; Lisimaco de Tracia, y Ptolomeo de Egipto. Cada uno de estos gobernadores tenían el título de diádoco, que quiere decir sucesor.

Antigono pensaba erigirse en amo absoluto de todo el imperio, pero los otros diádocos se aliaron contra él y lo derrotaron en la batalla de Ipso en el año 301 a. C. Finalmente, al términos de cruentas luchas, el imperio alejandrino quedó desmembrado en los siguientes reinos: a) el de Siria, que correspondió a los Seléucidas o descendientes del general Seleuco; b) el reino de Egipto, que fue gobernado por los Lágidas o sucesores de Ptolomeo, y c) el de Macedonia, que correspondió a los Antigónidas o descendientes de Antígono.

Aprovechando las guerras, algunas ciudades griegas intentaron recobrar su independencia, pero no tuvieron éxito debido a las rivalidades que existían entre ellas y evitaron que formaran alianza contra un enemigo común. El desmembramiento del imperio y la debilidad política y militar del decadente imperio alejandrino favoreció los designios de una nueva potencia: Roma, que primero sometió a Macedonia, y finalmente a Grecia, la cual pasaría a ser una provincia romana con el nombre de Acaya en el año 146 a. C.

WW2 Japanese Tanks

Tuesday, January 9, 2018

Although the Imperial Japanese Army fielded satisfactory medium tanks during World War II, about 80% of armored vehicles production in Japan consisted of light tanks and tankettes, whose total number rose to approximately 18,000 until 1945. Like the Italian, all the Japanese tank turrets and hulls were not cast in one piece, but they were built with riveted steel plates. Some of them were mechanically reliable military vehicles. However, they were lightly protected, with thin-skinned armor plates, and fitted with underpowered guns.

Japanese tanks first saw combat action in the second half of the 1930s, in China, during the Sino-Japanese War. Although they performed well, fighting against the poorly-armed and badly equipped Chinese Army, they were no match for the superior Allied tanks, especially the Sherman M4, which they met in the battlefields of the Pacific Theater of operations of World War II. They were easily destroyed also by the Bazooka and anti-tank guns used by the US Army Infantry and Marines.

List of WW2 Japanese tanks

-Type 4 Ke-Nu: an 8.4-ton light tank, armed with a 57mm gun and a 7.7 mm machine gun.
-Type 5 Ke-HO: a 10-ton model that featured a 37mm gun.
-Type 95 Ha-Go
-Type 97 Te-Ke: a 5.2-ton tank, fitted with a 37mm gun.
-Type 98-A Ke-Ni: it was a 7.2-ton light tank also armed with a 37mm gun
-Type 3 Chi-Nu: a 12.5-ton tank, fitted with a 75mm gun.
-Type 2 Ho-I
-Type 4 Chi-To: a 30-ton medium tank

A Type 4 Ke-Nu tank

Type 97 Te-Ke

Leopard 2 latest upgrade

Sunday, December 24, 2017

The German main battle tank, the Leopard 2, will be upgraded once again in the near future. The purpose of this radical improvement to its capacity is to enable the 2A4 version to face the new Russian threat, which is the T-14 Armata MBT. This upgrade package was developed by the German firm Rheinmetall and is called the MBT revolution. It includes a new modular armor that will supply the tank with extra protection again missiles.

Battle of Vimy Ridge

The Battle of Vimy Ridge was World War I battle that took place from April 9 to April 12, 1917, during the Battle of Arras, near the town of Vimy, Pas-de-Calais, France. It was fought between the Canadian Corps, under Field Marshal Sir Julian Byng, and units of the German Imperial Army, commanded by Ludwig von Falkenhausen.

Composed of the 1st, 2nd, 3rd, and 4th Infantry Divisions and reinforced by elements of the British 5th Division and artillery groups, the Canadian Corps was given the mission to take the German-held upper ground of Vimy Ridge, defended by the Bavarian 79th and 1st Reserve Divisions, and backed up by artillery units. The Canadian assault on the German positions in the area around Vimy was part of the 1917 Allied Arras offensive.

Supported by intense artillery fire, the Canadians launched their main attack on Vimy Ridge at 05:30 hours on April 9. At the end of three days of ferocious fighting against stubborn German resistance, the Canadian Corps troops managed to take the trenches and fortifications on the steep slopes. They had achieved their objectives, but at a high cost, for they had lost 3,600 men killed in combat, most of them by German artillery and machine gun fire during the trench assaults.

Weapons used in the battle

Forming part of the British Expeditionary Force, the Canadians were armed with the same types of weapons used by the British: Lee-Enfield bolt-action rifles; .303 (7.7mm) Vickers and .303 Hotchkiss M1909 machine guns; 2-inch trench mortars. These were the weapons used by the infantry. The artillery units were equipped with QF 18 pounder, French 75mm, 60-pounder-field-gun, BL 60 pounder field guns; and QF 4.5-inch and BL 8-inch howitzers.

The German troops were equipped with the 7.92mm Mauser Gewehr 98 bolt-action rifles; stick grenades (Stielhandgranate); 8mm MG 08 machine guns; 7.7 cm FK 96, 10 cm k 04, krupp-13-5-cm-fk-1909-gun, and Krupp 13.5 cm FK 1909 field guns.

Armada rusa combate a los piratas somalíes

Monday, December 18, 2017

Así combate la marina de guerra rusa a los piratas somalies que acechan y depredan a barcos mercantes y otras embarcaciones civiles que navegan cerca de las costas de Somalía y Etiopía. Estos piratas están vinculados al terrorismo internacional islámico y han causado mucho daño económico y pérdidas de vidas humanas. Hasta el momento, el gobierno ruso ha resuelto combatirlos, y lo hace de forma muy eficaz.